On Fri, 23 Feb 2007 16:37:43 +0100
Nick Piggin <[email protected]> wrote:
> +static void dcache_hash_resize(unsigned int new_shift);
> +static void mod_nr_dentry(int mod)
> +{
> + unsigned long dentry_size;
> +
> + dentry_stat.nr_dentry += mod;
> +
> + dentry_size = 1 << dentry_hash->shift;
> + if (unlikely(dentry_stat.nr_dentry > dentry_size+(dentry_size>>1)))
> + dcache_hash_resize(dentry_hash->shift+1);
> + else if (unlikely(dentry_stat.nr_dentry < (dentry_size>>1)))
> + dcache_hash_resize(dentry_hash->shift-1);
> +}
> +
Do we need to do this kind of resizing in implicit automatic way ?
I think it's good to show contention rate by /proc and add sysctl for
resize this.
-Kame
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